Oiler for die-stocks.



A. a. HALL.

l ,2 l O, 93 1 Patented J an. 2, 1917.

INVENTOR by Q ATTORNEY :s urns co., mwmunw.. asuma mN. n c

ABRAM R.'HALL, OF GREELEY,-COLOBADO;

OILER FOR DIE-STOCKS.

Specification of Letters Patent.

Patented Jan. 2, 191'?.

Application filed J une 29, 1916. Serial No. 106,693.

To all whom t may concern:

Be it known that I, ABRAM R. HALL, a citizen of the United States,'residing at Greeley, in the county of Weld and State of Colorado, have invented certain new and useful improvements in Oilers for Die- Stocks, of which the following is a specification.

This invention relates to an improvement in Oilers for use with die stocks, and comprisesr a member having substantially .the shape of one of the handles as usually fitted to a die stock, which member is adapted to be fitted in conjunction with the head of .the stock so that it may have utility in the manual handling and use of the stock, and which atfthe same time is adapted to contain oil and to have parts associated therewith manually operated to supplythis oil at proper intervals.

An object of my invention is to provide'a device asset forth above which may be fitted in conjunction with the die stock as manufactured, or which may be sold as a separate attachment to be applied bythe user, and which is so constructed that a considerable quantity of oil or other lubricant may bel stored therein and can be supplied at just the proper points for the work being done, when the diebecomes dry as it works upon the parts .being threaded, this permitting continual use of the tool in cutting a thread of any length without the necessity of stopping the cutting and placing the lubricant at the proper point-from the spout of an oil can or from some other independent source.

A further object lies in so constructing the device of vthe inventionxthat air will be supplied tothe lubricant-storage chamberas the lubricant is discharged therefrom, thus relievingany tendency to lthe creation of a partial vacuum which would hold the oil or lubricant against rproper flowing, and to further provide portions of a structure which will prevent leakage of thelubricant which is in a fluid state, either when the tool is being used or when it is being carried or is lying idle.

With the above and other objects in view, Vmy invention consists in certain novel features of construction and combinations of parts which will be hereinafter set forth in connection with the drawings and then more particularly pointed ,out in the claims.

In the drawings: Figure 1 is a view in side elevation of a handle having my invention embodied therein. Fig. 2 is a longitudinal sectional view through the structure as disclosed inFig. 1.

A body 1, which is preferably of pipe of a standard diameter, either in. or in., such as is now generally used in making the handles of die stocks, is externally screw threaded at each of its ends as shown at 2 and 3. A head portion 4, which is preferably a casting, is cored out or bored so that the openingthrough the center thereof will be preferably formed to four different diameters. At one end, the head member 4 is internally screw threaded and this threaded portion is formed to be fitted over the screw threaded end 2 of the body 1 so that the Vbody and head members will be rigidly secured together, and the diameter of the central bore of the head 4 immediately adjacent to the inner end of the body member 1 is made of the same diameter as the bore of the body to form a piston chamber 5, as will be hereinafter more fully set forth.

The end 3 of the body 1 is internally screw threaded and a face bushing 6 is removably fitted to close this end so that liquid lubricant may be placed in the bore of the body member 1 and then the screw threaded portion 3 of this body may be entered and screwed into one of the handle sockets of the usual die stock head. A valve casing 7 is secured through a screw threaded orifice Sf-,Qrmed through the side wall-of the body 1 adjacent to the inner end which isclosed by the removable face bushing 6,7and a ball check valve 9 is mounted in the casing 7 to be normally held by the spring 10 in a relation that incloses over the fluid passage 11 from the fluid chamber within the handle 1 to the interior of the valve casing. A tubev 12 is passed through the central opening of the locking nut 13, which nut is screwed onto the valve casing 7 to connect the tube 12 therewith, and thus a passage is provided from the interior of the bodylmember 1 and through the tube 12 to permit the supply of oil or other lubricant carried within the storage chamber within the-body 1 to any desired point. By makingthis tube 12 of soft copper, or other suitable material, the exact disposition of the open discharge end thereof can be varied to suit the requirement Vof the particular die stock head to which the. handle is fitted and consequently the lubricant can be supplied in such a relli) f ment therein, the stem 17 having a reasonvthreads as cut by the die and'will t .t l t y the die, or the lubricant may be supplied on 11 against back liow of ing threaded, in advance of the die -so that-'-liibi'icant chamber' Within the body 1. "If

ksides thereof to give proper baclnng to the Vthe piston structure embodyingl the cup vent the flow lation that it will liow directly into the supplying lubricant, howevenfdue to the lubricate fact that `the check valve 9 closes thevpassage fluid through the the pipe, bolt, or other member which isbe-i tube VV12,3no air can-find its rWay into the it willjhave 3 an opportunity to Apenetrate the parts be rltted suiiicientlyloosely that'air 70 yinto the crevasses whichV are usually ,found Will be permitted to seep back, thenthe oil'V on the outer steel like surface of'pipes and' or other lubricant will find itsfway out like members.l through these loosely litted joints, and it,

The bore 13 at the outer end of the head therefore becomes advisable thatsoin'e means member 4 is made vof comparatively large be provided whereby airA willA be 'permitted'V diameter and the bore intermediate this hanto flow into the lubricant chambers to'comdilev receivingv chamber 13" and the piston pensate for' the displacement'of'the lubrit chamber 5 is made to be graduated between cant.' With the above in mind, I" provide'a the two diameters, this intermediate por- Ycentral bore 26 in theinner end'ot the plun- 80 tion forming-an air supply chamber 14., ger stem 17 which is made ofsutlicientdepth A removable face bushing'15 is mounted that it extends in such a relation that a in the handlel receiving chamber 13 to close branch air supplypassage 27"'willV be atV all access to the air supply chamber 14 except times in a position to'open into the air supi'or the central oriice 16 formed through this bushing 15. A plunger Vstem 17 is mounted through the opening 16 and is arranged to be capable oi?V reciprocatory movelocking nut 21 has a central openingV therethrough in alinementV with the bore 26,'and a', check valve 27v is-inounted in the bore 26 to be normally held closed by the spring'28 to thus prevent'the back flow of liquid lubricant into-the air supplychamber14. As' has been stated, the plunger` stem 17 "hasa reasonably loose lit through the removable face bushing 15, and in consequence; airwill be permitted to i'ind its wav throughv the 95 space around the stem and into the chamber 14'and as lthe piston structure is returned under the tension of the spring 25- and the ably tight tit within the orifice 16. A. lieXible cup washer 18 is mountedl around the inner end of the plunger stem 17 and the Washers 19 and 20 are mounted on opposite flexible Washer 18 which is secured in place by a locking nutV 21. lBy this arrangement of the cup washer and the supporting washers, a piston structure is provided which will give a washing' stroke upon inward movecubic volume ofthe lubricant chamber isv Y ment of the plunger stem 17. 'A handle 22 thus increased, suction will be created 100' is mounted on the outer end 'of the stem 17 through the bore 26 and the vvfluid'supply Vto work vin the handle chamber 13, and has passage 27csutiiciently strongV to unseatY the slight projection beyond the eXtreme outer valve 27, and consequentlyairwill'flow into end of the head member 4, the parts being the lubricant chamber wto compensate" for the kthus so arranged that the handle 22 is norlvolume of liquid displacedby the "'instrole 105 mally in a position that it may be readily of the piston and upon the passage of- Suthengaged by tlie thumb or linger and upon cient air'to give the proper compensation, being depressed into the handle receiving the` valve 27v chamber 13 will cause inward movement of the air supply passage will be cut ott to preofthe'liquid lubricantv back 110 washers 18, thus exerting pressure within through the supply passage 27 Yinto the Vair the lubricant chamber to expel a limited Supplychamber 14. f i. v v quantity of the lubricant passed the check From the `foregoing it Will be seen that I Y valve 9 and through the tube 12 to discharge have provided a structurewhich may beinlside of the removable tace bushing 15 and at the proper point adjacent to t-he die. l/Vashers 23 and 24 are mounted around the plunger stem 17 to bear against the inner corporated with a die stock head as'the same 115 is manufactured, or whichmay be construct- Yed as av separate attachmentto be applied to take the `place of one of the handles ofV a against the shoulder formed between the air supply chamber 14 and the piston chamber and that the. structure is so arranged that a 120' 5, and a coil spring 25 1s mounted between considerable quantity of lubricant infaliquid these washers around the stem in such relaform may be stored'therefin andl may be :suption that as the plunger stem ismoved inplied in single drops or perhaps in some wardly the Washer23 will bebrought to instancesxin a slow land steady low'b'y mabear against the spring 25 and consequently nipulation of the plunger stem 17 ,thus per- 125 the stem and the piston carried thereby will mitting the supply of just the proper quanbe returned to the normal relation as shown tity of lubricant and the'placing of the same in Fig. 2 immediately the pressure upon the at the proper point, and While I have herein handle 22 is removed. With this operation shown and described only one specific form of the parts, the device will be etlicient in of the device, itv will be understood that 130 ply chamber 14 of thehead member 4. The 8'.- V'

willbe again closed and thus4 Y i standard die stoer which is already muse, v

changes and variations might be resorted to in the'form and arrangement of the parts without departing from the spirit and scope of my invention, and hence I do not wish to be limited to the exact disclosure but only to such points as may be set forth .in the claims.

I claim:

1. A lubricator comprising a hollow body portion adapted to contain a liquid lubricant, a lubricant discharge passage from one end of said body, a check valve to preclude return of the lubricant through said dis charge passage, a plunger stem mounted at the remaining end of the body, a piston on said plunger working to cause the flow of liquid lubricant through the discharge passage as the plunger stem is moved inwardly, and means to permit supply of air to the lubricant chamber upon the return stroke of the piston to compensate for the liquid discharged from the chamber by the instroke of the piston.

2. A lubricator comprising a body portion formed to provide a lubricant containing chamber, a passage from said chamber, a head member secured on said body member and provided with al bore alined with the liquid chamber in the body, aremovable face bushing mounting in the outer end of said head member and providedwith a central opening, a plunger stem mounted to be caable of reciprocatory movement through the orifice of the bushing, a piston carried by the inner end of said plunger stem to cause discharge of lubricant through the passage from the storage chamber upon instrokes five cents each, Washington, D C.

head member secured on said body member and provided with a bore alined with the liquid chamber in the body, a removable face bushing mounting in the outer end of said head member and provided with a central opening, a plunger stem mounted to be capable of reciprocatory movement through the orice of the bushing, a piston carried by the inner end of said plunger stem to cause discharge of lubricant through the passage from the storage chamber upon instrokes of the plunger stem, a spring to return the plunger stem following instroke of the piston, a check valve mounted in the lubricant discharge passage to close the same against back flow of lubricant, an air supply chamber formed in the head, a valved air passage formed through the plunger stem to open into the air supply chamber, and means held under the proper packing tension by said spring to close access from the lubricant chamber to the air supply chamber.

i In testimony whereof I afliX my signature in presence of two witnesses.

ABRAM n. HALL.

Witnesses LAWRENCE MGARTHUR, SAMUEL WILLIAMS.

by addressing the Commissioner of Patents, 

